62 63 Ser 60 DIESEL w 15000 lb 2 SPD axle SEAL ASSY adapter oil Eaton 42893 2347192 1 85 62 Ser 60 DIESEL w 15000 lb 2 SPD axle STUD adapter to housing 46 24 x 1 147664 3 4 862 4 337 SPEEDOMETER GEARS GEAR ASSY w fitting Tube Type Tires 56 ALL w I LT 6 50 x 20 57 59 ALL H T w 6 16 axle 7 00 x 20 7 50 x 20 daub of green and orange paint 18 teeth 3707627 1 4 338 56 57 ALL w H T 6 50 x 20 daub of green and white paint 19 teeth 3707628 1 4 338 56 57 ALL w H T 8 25 x 20 daub of blue and orange paint 17 teeth 3707626 1 4 338 57 ALL w H T 10 00 x 20 daub of blue and green paint 16 teeth 3707625 1 4 338 GEAR ASSY w fitting Tubeless Tires 56 59 ALL w H T 8 x 22 5 8 ply daub of blue and orange paint 17 teeth 3707626 1 4 338 56 59 ALL w H T 7 X 22 5 daub of green and orange paint 18 teeth 3707627 1 4 338 56 59 ALL w I l I 8 x 19 5 daub of green and white paint 19 teeth 3707628 1 4 338 GEAR UNIT Speedometer Transmission Drive and Driven The following combinations are based on tires having highway type treads For other types sizes and odometer correction factors see Service and Mechanical Dept Product Data Book Section XII Part Speedometer List Part Speedometer List No Gear Teeth Color Code Price No Gear Teeth Color Code Price A 3689121 4 15 Gray 3 60 3760351 5 20 Purple White 5 45 3689178 4 13 Purple 3 60 3760352 5 17 Black Orange 10 25 3689179 4 14 White 3 60 3760353 5 18 B1ack Purple 10 25 3731993 4 13 Purple 5 45 3760354 5 19 Purp1e Orange 10 25 3731994 4 15 Gray 5 45 3760355 5 20 Purple White 10 25 3731995 4 14 White 5 45 3ZQ0480 5 8 Black Purp1e 9 75 3731996 4 13 Purple 8 50 3 7 60481 5 12 Purple Orange 9 75 3731997 4 14 White 8 50 3760482 5 20 Purple White 9 75 3731998 4 15 Gray 8 50 3770381 4 16 stamped 3766799 3731999 4 13 Purple 9 75 on driven gear 15 00 3732000 4 15 Gray 9 75 3770382 4 15 stamped 3766800 3732001 4 14 White 9 75 on driven gear 15 00 3760344 5 17 Black Orange 3 60 3823436 4 15 15 50 3760345 5 18 Black Orange 3 60 3824520 4 15 19 95 3760346 5 19 Purple Orgnge 3 60 3830624 4 15 15 50 3760347 5 20 Purple White 3 60 3839114 5 18 3 50 3760348 5 17 Black Orange 5 45 383911 5 17 3 50 3760349 5 18 Black Purple 5 45 3839118 5 20 3 50 3760350 5 19 Purple Orange 5 45 383 1v9 5 19 3 50 I 1 TON SPEEDOMETER GEAR NUMBER CHART SINGLE SPEED AXLE w 4 SPD TRANSMISSION 9 00 x 20 See Note Tire Size 10 00 x 20 Year Pinion 7 00 x 20 8 25 x 20 10 x 22 5 R Gear 6 50 x 20 7 00 x I7 7 00 x 18 7 x 22 5 7 50 x 17 7 50 x 20 8 x 19 5 8 x 22 5 9 x 22 5 11 22 5 55 58 6 37 3689121 3689121 3689179 56 58 6 37 3689121 3689121 3689179 3689178 3689178 59 6 37 3760345 3760346 59 6 46 3760347 60 62 6 37 3760346 3760346 3760346 60 62 5 33 3760346 3760346 3760345 3760344 61 65 7 38 3760344 3760344 3760344 3760344 3760344 3760344 3760344 f 63 66 6 37 3760345 3839117 3839117 3839117 3839117 63 66 5 36 3889118 3839118 3839119 1966 Chevrolet Motor Division 4330 4337 General Motors Corporation 387 HDI REVISED MARCH 1 1966